Rig Veda
उ॒त स्य वा॒जी सहु॑रिॠ॒तावा॒ शुश्रू॑षमाणस्त॒न्वा॑ सम॒र्ये । तुरं॑ य॒तीषु॑ तु॒रय॑न्नृजि॒प्योऽधि॑ भ्रु॒वोः कि॑रते रे॒णुमृ॒ञ्जन् ॥ उत स्य वाजी सहुरिॠतावा शुश्रूषमाणस्तन्वा समर्ये । तुरं यतीषु तुरयन्नृजिप्योऽधि भ्रुवोः किरते रेणुमृञ्जन् ॥
And that swift (horse) enduring in battle, bestowing food, and doing service with his limbs, rushing swiftly upon the quick-moving (host of the enemy), going straight onward, and tossing up the dust, throws it above his brows.
english translation